I mean, because why not? There are still many important thoughts to be spoken. Tasks to be completed. Worlds to be discovered.
Speaking of which, can you imagine if there was another world out there with living beings? Now if those people tried visiting and living here, they truly would be aliens. Would they need intergalactic passports? Space Visas? It would be hard to create train tracks between planets because those are constantly in motion, yo.
Then again, if it was made out of a very elastic material, that could work smoothly. They would just need to undulate with the right timing and be sure to avoid all asteroids.. Like that would be easy! At all!!